Telegraph system



A. D. DOWD.

TELEGRAPH SYSTEM.

APPLICATION FILED JANA, 1918.

1,364,086. Patented Jan. 4, 1921.

I N N Trans. Magnet mvnfo 7'. A rid/e D. Doyvd by MAW/y his embodies a orintin recorder havin a l 2- plurallty of selecting magnets, WlllCll are shown) at one terminal of a, duplex telegraph UN T ANDREW Di :D F H E lv, NEW JERSEY; assrcnon 'roxwns'rnmi Emma COMPANY, INCORPORATED, on NEW YORK, iv. Y., AcoRroRA'rro or NEW yonx. I a

I hrnnnanaP srsrmvri Application filed January 4,

To all whom it may concern:

Be it known that I ANDREW D. Down,' a"- citizen of the United tates residin at Hoboken, in the county of I ludson, btate of New J ersey, have invented certain new and useful Improvements in Telegraph Systems, of which the following is afull', clear;.concise, and exact description.

This invention relates to telegraph system and particularly to printing telegraph systems that are provided with sunflower switches for connecting transmitting and receiving apparatus to telegraph circuits;

One object of the invention is to provide a printing telegraph systemhaving a single sunflower switch at each station that shall govern the operation of the transmitting and recording apparatus at thehome station and transmit to the telegraph circuit and to the I associated home recorder impulses which are selected bythe transmitting apparatus.

In the printing telegraphsystemutilized I for describing the invention, a telegraph station is provided with transmitting apparatus and a home recorder which may be connected to a duplex telegraph circuit if so desired. The transmittingapparatus embodies a keyboard or a tape transmitter for selecting the impulses to be transmitted and a series of relays for storing the selected impulses which areto be transmitted to the telegraph circuit. The recording appa'raselectively operated in accordance with the c impulses selected by the transmitting apparatus. 1 x

The singlefigure of the accompanying drawing is a diagrammatic view of a printing telegraph system constructed in accordance with this invention. Referring to the accompanying drawing, a sunflower switch 1 is connected to a telegraph circuit embodying conductors 2 and 3 that may beutilized if so desired for operating a polarized transmitting relay'-(not circuit. The sunflower switch 1 serves to control the operationof a transmitter 4'and a recorder 55, and connects the transmitting apparatus to the telegraph cii-cuit.

The transmitting apparatus embodies a current-control. means 6,'which may be a keyboard transmitter or at tape transmitter and includes a plurality of contact terminals engages a'contact'terminal '18, is operated whenever any of; the switch'members 12 to [16 inclusive areoperate'd. A plurality of "selectorrelays 19,20,21, 22 and 23 are prouvided for storing theinipulses' which are selected by the current-control means 6. The] selector relays 19,110 23, inclusive," embody energizing coils 24 to. 28, inclusive, and

for. the seleetor relays.

' A. control relay SO having armatures 81 and 82-is provided 1 for opening a circuit .1918. Serial m ma. I v

Specification ofLetterslatentp Patent d Ja 4,192

, 7, 8, 9,10 and 11 which are selectively" 6Il-' gaged'by switch members 12, 1'3, 14, 15 and '16. Acommon switch member 17,.which holding coils 29 to 33, inclusive. Moreover,

switch 1' gand armatures v 39 't0 '43, inclusive,

which I serve". to establish holding circuits The recording apparatus 5 embodies recording means 50 whichincludes "selecting magnets orfrelaysol, 52, 53,54 and 5 5 that i are selectively operated in, accordance with the impulses received from the-sunflower switch llto select a character to be printed, A conductor 56, which is; shown connected to therecording means 5, may be utilized for. operating a printing magnet (not shown) orfor operating any similar recording means.

MThe sunflowerswitch lembodiesa brush arm (iO which is frictionally mountedon a constantly rotating shaft 61 and which is inormallylocked in Jan initialposition means of a latch The brush arm is provided with a brush 63, which bridges a contact ring 64 and contact segments v65 to inclusive, and a brush 45, which connects .a contact segment '71 to contact segments 7 2 and 73 and a contact ring 74 to "contact segments 75'to 7 9 inclusive. Y I

-the,s electing relays 19v to 23inclusive, are provided with armatures 34 to38, inclusive, for completing circuits to the sunflower from, a battery 83through thecurrent controlmeans '6, and for completing'a circuit from a'battery 84 through a start relay 85. The start relay 85 is provided with an ener-' .gizing coil 86, a holding coil 87, an armature 88 for completing a circuit from battery 89 through a start magnet 90, and an armature 91 for completing acircuit from abattery '92 through the holding coil 87, and if" so shown) of a tape transmitter.

desired through ,an operating magnet (not 'sive, and for establishing a holding circuit for itself from a battery 97, and an armature 98 for opening the circuit of the currentcontrol means 6. A relay'100, which serves the function of an overlap relay, is provided with an armature 101 for establishing a locking'circuit through the lock-out relay 93, and an armature 102 for establishing a holding circuit from a battery 103 for itself. A line relay 105 is provided with an armature 106, for establishing circuits from a battery 107 through the printing selector magnets 51 to inclusive.

1n the printingjtelegraph system utilized in describing this invention, a five-unit code madeup ofimpulses of current and inter- ,vals of no current is used in the selection of each character; and, in describing the invention, it' will be assumed that the signal to be transmitted embodies the following units, namely, current impulse, three intervals of no current and a current impulse.

.The current control means 6 is operated to select switching arms 12, 16 and 17 and completes a circuit from ground, through the switching member 17 ,contact terminal 18, relay 100, armature 98, armature 81, where the circuit divides, one branch extending through the. switch member 16, coil 28 of the selector relay 23, and the battery 83 tofground, and the second branch extending through the switch member 12, contact terminal .7, coil 24 of the selecting magnet 19, and battery 83 to ground. The relays 19 and 23 are operated and holding circuits are established from battery 83, through coils 29 and 33, the armatures 39 and 43, relay 80, and the armature 96 to ground.

When relay 80 is operated, the armature 81 breaks the circuit previously traced through the energizing coils 24 and 28 of the selector relays 19 and 23, and the armature 82 completes a circuit from ground through the battery 84, armature 82, coil 86 of the start relay 85, contact segment 72, brush 45, and contact segment 71 to ground. Thus, the start relay 85 is operated to complete a circuit from battery 89 through start magnet 90 and to establish a holding circuit for itself from the batter 92. The start magnet operates the latch member 62 to release the brush arm in order to permit'it to effect one revolution over the segments of the sunflower switch 1. the brush arm 60 rotates in a counter-clockwise direction, the closed circuit which was completed by the brush 63 through the ring 64, the contact segment 70, the line battery 109, and the telegraph circuits 2 and 3, is broken by the brush 63 disengaging the contact segment 70, and, as the brush 45 disengages contact with the contact segtelegraph circuit 2.

When

ments 71 and 72 the circuit through the start relay is broken to deenergize the start magnet 90. The latch 62 is released and falls back into positio'nto stop' the brush arm after one revolution. The continued rotation of the brush arm 60 effects the bridging of the contact segment and contact ring 64 by means of the brush 63, and the bridging of the contact ring 74 and the contact se ment 75 by means of the brush 45. The brush 63 completes a circuit that may be traced from the conductor 3 through the battery -109, relay 105, contact ring 64,

the brush 63, contact segment 65, and thearmature 34 of the selector magnet 19 to the The line relay 105 is operated and a circuit is completed from battery 107 through the armature'106, contact ring '74, brush 45, contact segment 75 and the selecting magnet 51 to ground. Inasmuch as the selector magnets 20, 21 and 22 have not been operated, no impulses are transmitted to the telegraph circuit when the brush arm 60 passes over the contact 7 segments 66, 6'7 and 68. However, when the 9 brush 63 engages the contact segment 69, a circuit is completed from the battery 109 through the, relay 105, contact ring 64, brush 63, contact segment 69, and the armature 38'of the selectorrelay 23 to the line conductor 2. The 'line' relay 105 is again operated and a circuit is completed from the battery 107 through the armature 106, contact ring 74, brush 45, contact segment 79 and the selective magnet 55 to ground. 2

The magnets 51and' 55 of the recording means 5 have been energized, and when the brush 45 of the sunflower switch 1 bridges the contact segments 71 and '73, a circuit is established for effecting the printing of the selected character and for operating the look-out relay 93 in order to release the operated selecting relays. The circuit which is completed through the lock-out relay may be traced from the ground through the contact segments 71 and 73, which are bridged by brush 45, coil 95 and the battery 104 to ground. The armature 96 of the lookout relay opens the circuit previously traced from the battery 83 through the locking coils 29 and 33 of selector magnets 19 and 23, and completes a holding circuit for relay 93 in case the relay 100 is operated. The armature 98 prevents a further selection by the current-control means. Thus, in case any key and the switch 17 is maintained in a closed position, a circuit is established for the relay 100 from the battery 103. Accordingly, if the look-out relay 93 is energized when the. relay 100 is in an operative position, a holding circuit is established'for the lock-out relay 93, from the battery 97 through the armatures 101 and 96. r

Modification ofthe system and arrangement and locatlon of partsmay be effected i within the spirit and scope of this lnvention, and. such modifications are" intended to be covered by the appended claims;

i 'What isclaimed is:

for setting up character code combinations,

*means controlled by the said transmitter for storing the code combinations, a CllSr' tributer controlled by said transmitterzand adapted to transmit to line impulses corresponding to the code combinations stored by said means, a relay included in the main 5 llne circuit and responsive tosaid line 1m pulses, and a recording device associated with said distributer and controlled by's'aid line relay for recording the characters represented by the line impulses I I r 2. In a printing telegraph system, the combination with a main line circuit, a

transmitter for setting up character code combinations, relays controlled by said transmitter for storing the code combinatlons, said relays having holdlng windings adaptedto retain said relays in their aotu jl acters represented by the line impulses.

3. In a printing telegraph system, the combination with a main line CUCClUt,

transmitter for setting up character code comblnations, means controlled by said transmitter for storing the code combina tions, comprising a series ofrelays each of said relays being provided with an energizing winding and a holding winding, said holding windlngs being adapted to retain said relays in their actuated conditionindecontrolled by said transmitter and adapted to transmit to line impulses corresponding to the code combination stored by said res lays, and a recording device connected, cdi-q rect to said distributer and controlled thereby for recording characters represented by the code combinations stored in said relays.

4. In a printing telegraphsystem, the;

combination with a main line circuit, a

transmitter for setting up charaetercode combinations, means controlled by said.

transmitter for storing the codebombina tions, a distributer controlled by said transmitter and comprising a plurality of continuous and segmented-rings, a recording device also associated with said distributor,

; contacts controlled :Qby said istoring I means and connected directly toi'certain of said distributer segments, a recording mechanism, comprising aplurality of electro-responsive 1 devices, connected: "directly to certain other I p distributer segments and j. arran'gedfto"re-' 1. In a printing telegraph system, I they combination with a main line, a transmitter mined by said storingmeans. c I

combination with a 'main iline circuit, a

transmitter for setting up character code combinations, relayscontrolled by said;

transmitter forstoring the code combinagizing circuits adapted to be closed by said transmitter, said relays also being provided 1 spond to theetfects' of the "impulses trans mitted to line bysaid distributor and'deteia tions, said relays bein'g provided withenerwith holding windings'whereby saidrelays transmitter for releasing said distributer,

, whereby the code coinbinations stored by said relays may betransmitted to line in the form of currentfimpulses, and a recording device HSSOCIELI'JGCl wlth said dlstr bute'r and "controlled thereby to record the characters the code combinations stored represented by in said relays.

6. In a printing telegraph system,

combination with a main line circuit, a transmltter for setting up character code combinations, relays --controlled by said transmitter for storing thecode combinac tions, said relays being vprovided with energizingcireuits adaptedto be closed by said transmitter, said relays alsobeing provided withholdingwlndings whereby said relays when once actuated are retained in their actuated COXlClltlOll; independently of said tending to rotate, means controlled by said transmitter for releasing said distributer ion Qtransmitter, a rotarydistributer normally:

whereby the code combinations stored by said relays maybe transmitted'to line in trolled by said distributor for openingthe the form of current iinpulsea means 0on f pendently of the transmitter, a distr butor y holding circuits oi said relays, anda recording device associated with said distributor and controlled thereby to record the char acters represented by the code combinations stored in said relays.

nations, a holding circuitlfor said relays, and

recording apparatus located at said station,

of automatic means for opening theiholding 7.111 a" printing telegraph system, the f combination with a telegraph-circuit, a sta tio'n connected to' said circuit, transmitting apparatus located at said station and comprising means for selecting code combine tions and relays for-storing the code combi- I h the operation of the recording means and for second selectionof impulses under predecontrolling the operation of the automatic termined conditions, and a sunflower switch and the holding means. for transmitting to the telegraph circuit, im- In Witness whereof, I hereunto subscribe pulses corresponding to the code combinamy name this 29th day of December A. D., 10 5 tionsstored bysaid relays, for governing 1917.

ANDREW D. DOWD. 

